Intro to Area and Circumference of Circles

Choose the answer which best describes how these formulas are related to each other.

• They both solve for circumference. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

• They both solve for circumference, in the first uses diameter and the second uses pi.

• They both solve for area. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

Tags

CCSS.7.G.B.4

Steven purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?

• 42.15 cm

• 43.96 cm

• 44.28 cm

• 44.37 cm

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a radius of 13.5 mm.

• 84 mm

• 84.68 mm

• 84.78 mm

• 85

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a radius of 54 m?

• 339.12 m

• 340.56 m

• 342.78 m

• 345.39

Tags

CCSS.7.G.B.4

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

• 3 m

• 20.42 m

• 37.68 m

• 18.84 m

Tags

CCSS.7.G.B.4

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

• 10.5 ft

• 42 ft

• 65.94 ft

• 131.95 ft

Tags

CCSS.7.G.B.4

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

Tags

CCSS.7.G.B.4

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)?

• 11.32 ft

• 12.25 ft

• 10.99 ft

• 8.75 ft

Tags

CCSS.7.G.B.4

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 8 mm

• 9 mm

Tags

CCSS.7.G.B.4

If my diameter is 25 inches, what is my radius?

• 50 inches

• 12.5 inches

• 78.5 inches

• 25 inches

Tags

CCSS.7.G.B.4